Thirty-four postmenopausal stress incontinence patients were divided in two groups: 17 were treated with 0.5 mg oestriol vaginal cream for 90 days, 17 controls were treated with moisturizing cream. All had low urethral pressures and dystrophy. Treated patients showed improvement of maximum urethral pressure, urethral closure pressure, and volume at first sensation of fullness. Dystrophy was cured in most patients; in 17% incontinence was cured and in 41% subjectively improved.